How to convert
J = cal × 4.184
Reverse: cal = J × 0.2390057361
J = cal × 4.184
Reverse: cal = J × 0.2390057361
Converting cal to J
cal and J (joule) are units of energy. One cal equals 4.184 J. Just type a value in the box above to convert instantly — useful for recipes, drawings, product specs and travel between metric and imperial units.
cal to J conversion chart
| cal | J |
|---|---|
| 1 cal | 4.184 J |
| 2 cal | 8.368 J |
| 3 cal | 12.552 J |
| 5 cal | 20.92 J |
| 10 cal | 41.84 J |
| 20 cal | 83.68 J |
| 50 cal | 209.2 J |
| 100 cal | 418.4 J |
Frequently asked questions
- How many J are in one cal?
- 1 cal = 4.184 J.
- How do I convert J back to cal?
- Multiply the J value by 0.2390057361 to get cal.
- Is my input sent to a server?
- No. Everything is calculated locally in your browser and nothing is uploaded or stored.